MEDIÇÕES DE VAPOR DE ÁGUA ATMOSFÉRICO E DA PRESSÃO DE SUPERFÍCIE A PARTIR DE IMAGENS DO SENSOR AVIRIS E SUA RELAÇÃO COM A TOPOGRAFIA NO COMPLEXO DE NIQUELÂNDIA

Osmar Abílio de Carvalho Júnior; Ana Paula  Ferreira de Carvalho; Renato  Fontes Guimarães; Roberto Arnaldo  Trancoso Gomes

doi:10.26512/2236-56562011e39906

Authors

Osmar Abílio de Carvalho Júnior Universidade de Brasília - UnB/GEA/LSIE
Ana Paula Ferreira de Carvalho Instituto Nacional de Colonização e Reforma Agrária – INCRA
Renato Fontes Guimarães Universidade de Brasília - UnB/GEA/LSIE
Roberto Arnaldo Trancoso Gomes Universidade de Brasília - UnB/GEA/LSIE

DOI:

https://doi.org/10.26512/2236-56562011e39906

Keywords:

imaging spectroscopy, hyperspectral, atmospheric absortion features, digital elevation model

Abstract

The imaging spectroscopy is capable to detect the absorption features of the atmospheric components supplying an estimate of the amount of gases and aerosols. In this paper the AVIRIS (Airborne Visible/InfraRed Imaging Spectrometer) image is used to estimate the spatial distribution of water vapor and surface pressure. The study area was the massive Niquelândia presents a pronounced variation in height, with altitudes between 500m and 1.180m. A digital terrain model (DTM) was developed and compared with atmospheric images using linear regression. The condition of clear sky, without cloud cover, favored a high correlation between the DTM and the atmospheric parameters. The error images show the worst adjustments in water bodies and bare soil.

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References

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